Lloyd Bridges
— Phil Corrigan (Secret Agent X-9)
Keye Luke
— Ah Fong
Jan Wiley
— Lynn Moore
Victoria Horne
— Nabura
Samuel S. Hinds
— Solo
Cy Kendall
— Lucky Kamber
Jack Overman
— Marker
Clarence Lung
— Takahari
Benson Fong
— Dr. Hakahima
Arno Frey
— Kapitan Grut
Ferdinand Munier
— Papa Pierre Dupray
Ann Codee
— 'Mama Pierre' Dupray
Edward Howard
— Drag Dorgan